What is COVARIANCE? What is CORRELATION? Detailed video!

0:00 Introduction | 1:09 Definition | 2:48 Covariance and Correlation from a sample | 9:55 Covariance and Correlation from a probability distribution (using EXCEL) | 18:47 Why do we divide by n-1 for a sample? Descriptive Statistics playlist here: https://www.youtube.com/watch?v=bfQLNyiDPsk&list=PLTNMv857s9WVStKLco6ZBOsfSGXzJ1L0f See all my videos here: http://www.zstatistics.com/videos Degrees of freedom video here: https://www.youtube.com/watch?v=N20rl2llHno Music by Purdy Song: 3 Friends to The Stars https://purdy.bandcamp.com/track/3-friends-to-the-stars